Yes, that's just it. Tyres have not evolved with our design concepts. Every time I look at a Honda Insight, I think about what a pain it would be to change the tyre. (excuse me, "tire") Take a $30,000 vehicle, and put it on four pieces of inflated rubber that can be mutilated by any stray piece of metal lying about in the road. Not too smart.
Where are the engineers these days?
Love,
Trollio (who changed a tyre/tire last week)